New testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15231 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/DeadStoreElimination/alloca.llx b/test/Transforms/DeadStoreElimination/alloca.llx
new file mode 100644 (file)
index 0000000..c75a618
--- /dev/null
+++ b/test/Transforms/DeadStoreElimination/alloca.llx
@@ -0,0 +1,8 @@
+; RUN: llvm-as < %s | opt -dse | llvm-dis | not grep DEAD
+
+void %test(int* %Q) {
+       %P = alloca int
+       %DEAD = load int* %Q
+       store int %DEAD, int* %P  ;; Alloca goes out of scope, dead store.
+       ret void
+}